Positioning method, device, computer equipment and storage medium

A positioning method and a technology for calculating values, applied in the field of satellite navigation, can solve problems such as fixed ambiguity parameters, inaccurate positioning, and large correlation

Active Publication Date: 2021-06-08
GUANGZHOU HI TARGET SURVEYING INSTRUMENT CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, when the communication between the satellite and the ground receiver is interrupted, it needs to re-converge, and the convergence process of PPP technology generally takes a long time
Due to the high correlation between ionospheric parameters and ambiguity parameters in the existing accelerated convergence methods, in the absence of prior ionospheric information, it is often difficult to accurately fix the ambiguity parameters, so ignoring some parameters will lead to positioning Inaccurate

Method used

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  • Positioning method, device, computer equipment and storage medium
  • Positioning method, device, computer equipment and storage medium
  • Positioning method, device, computer equipment and storage medium

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Embodiment Construction

[0036] In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

[0037] The positioning methods provided in the embodiments of the present application can be applied to, for example, figure 1 computer equipment shown. The computer equipment includes a processor, memory, a network interface, a display screen, and an input device connected by a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium, an internal memory. The nonvolatile storage medium stores an operating system, a computer program, and...

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Abstract

The present application relates to a positioning method, device, computer equipment and storage medium. The method includes: obtaining the ionospheric delay change amount when the satellite carrier phase observation value jumps; Lane integer ambiguity variation; according to the wide-lane integer ambiguity variation and the preset second estimation model, determine the first integer ambiguity variation actual value and the second carrier frequency of the first carrier frequency of the satellite The actual value of the ambiguity change in the second full cycle of , and then restore the continuity of the satellite carrier phase observation value; use the continuous satellite carrier phase observation value for positioning. Using this method can improve the accuracy of fixing the ambiguity of the whole circumference, so that the accuracy of positioning is greatly improved.

Description

technical field [0001] The present application relates to the field of satellite navigation, and in particular, to a positioning method, apparatus, computer equipment and storage medium. Background technique [0002] Precise Point Positioning (PPP) technology is a high-precision absolute positioning method commonly used in the field of GNSS Global Navigation Satellite System (GNSS), which can be obtained based on a single GNSS receiver. Centimeter-level positioning accuracy on a global scale. [0003] PPP technology does not require users to set up a reference station by themselves, is not limited by operating distance, and is flexible and can be widely used in precision agriculture, ocean surveying, earthquake early warning, automatic driving and other fields. However, when the communication between the satellite and the ground receiver is interrupted, re-convergence is required, and the convergence process of PPP technology generally takes a long time. Due to the large c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/44
CPCG01S19/44
Inventor 左翔史小雨李成钢
Owner GUANGZHOU HI TARGET SURVEYING INSTRUMENT CO LTD
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